n-3 Polyunsaturated fatty acids throughout the cancer trajectory: influence on disease incidence, progression, response to therapy and cancer-associated cachexia

Author:

Baracos Vickie E.,Mazurak Vera C.,Ma David W. L.

Abstract

AbstractEvidence from epidemiological studies suggests that diets rich inn-3 PUFA may be associated with reduced cancer risk. These observations have formed the rationale for exploring the mechanisms by whichn-3 PUFA may be chemoprotective and have resulted in significant advances in our mechanistic understanding ofn-3 PUFA action on tumour growth. Various interrelated and integrated mechanisms may be at work by whichn-3 PUFA influence cancer at all stages of initiation, promotion, progression, and neoplastic transformation. More recently, experimental studies have reported enhanced tumour cell death with chemotherapy when fish oil is provided while toxic side effects to the host are reduced. Furthermore, cancer-associated wasting has been shown to be attenuated by fish oil supplementation. Clinical evidence suggests that then-3 PUFA status of newly diagnosed cancer patients and individuals undergoing chemotherapy is low. Therefore, both the disease itself and therapeutic treatments may be contributing factors in the decline ofn-3 PUFA status. Dietary supplementation to maintain and replenishn-3 PUFA status at key points in the cancer disease trajectory may provide additional health benefits and an enhanced quality of life. The present review will focus on and critically examine current research efforts related to the putative anti-cancer effects ofn-3 PUFA and their suggested ability to palliate cancer-associated and treatment-associated symptoms.

Publisher

Cambridge University Press (CUP)

Subject

Nutrition and Dietetics,Medicine (miscellaneous)

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